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991.
The Ability to Map Differentially Stressed Labels to Objects Predicts Language Development at 24 months in 12‐month‐olds at High Risk for Autism 下载免费PDF全文
Sensitivity to language‐specific stress patterns during infancy facilitates finding, mapping, and recognizing words, and early preferences for the predominate stress pattern of the infant's native language have been argued to facilitate language relevant outcomes (Ference & Curtin, 2013 Journal of Experimental Child Psychology, 116, 891; Weber et al., 2005 Cognitive Brain Research, 25, 180). We examined 12‐month‐old infant siblings of typically developing children (SIBS‐TD) and infant siblings of children diagnosed with autism spectrum disorder (ASD; SIBS‐A) on their ability to map differentially stressed labels to objects. We also examined whether success at this task relates to infants’ vocabulary size at 12 months, and more specifically to SIBS‐A's vocabulary at both 12 and 24 months. SIBS‐TD successfully mapped the word–object pairings, which related to their vocabulary comprehension at 12 months. In contrast, SIBS‐A as a group did not map the word–object pairings, which was unrelated to vocabulary size at 12 months. However, success on this task for SIBS‐A predicted expressive language abilities at 24 months using the Mullen Scales of Early Learning (MSEL; Mullen, 1995 Mullen Scales of Early Learning. Circle Pines, MN: American Guidance) and the MacArthur‐Bates Communicative Development Inventory (MB‐CDI; Fenson et al., 1993 MacArthur Communicative Development Inventory: Users Guide and Technical Manual. San Diego, CA: Singular Publishing Company). Our study is the first to demonstrate that 12‐month‐old SIBS‐A who succeed at word mapping using lexical stress are more likely to have stronger expressive language abilities at 24 months. 相似文献
992.
Inverse Adaptive Cluster Sampling with Unequal Selection Probabilities: Case Studies on Crab Holes and Arsenic Pollution 下载免费PDF全文
Mohammad Salehi Mohammad Moradi Jassim A. Al Khayat Jennifer Brown Adil Eltayeb Mohamed Yousif 《Australian & New Zealand Journal of Statistics》2015,57(2):189-201
Adaptive cluster sampling is an efficient method of estimating the parameters of rare and clustered populations. The method mimics how biologists would like to collect data in the field by targeting survey effort to localised areas where the rare population occurs. Another popular sampling design is inverse sampling. Inverse sampling was developed so as to be able to obtain a sample of rare events having a predetermined size. Ideally, in inverse sampling, the resultant sample set will be sufficiently large to ensure reliable estimation of population parameters. In an effort to combine the good properties of these two designs, adaptive cluster sampling and inverse sampling, we introduce inverse adaptive cluster sampling with unequal selection probabilities. We develop an unbiased estimator of the population total that is applicable to data obtained from such designs. We also develop numerical approximations to this estimator. The efficiency of the estimators that we introduce is investigated through simulation studies based on two real populations: crabs in Al Khor, Qatar and arsenic pollution in Kurdistan, Iran. The simulation results show that our estimators are efficient. 相似文献
993.
Jennifer Tomlinson 《Gender Issues》2008,25(4):246-266
The paper aims to develop a framework to understand the variant use of part-time work by employed mothers in the UK and US.
In particular, this paper seeks to explore how diversity in the use of part-time work can be explained when both countries
are associated with a neo-liberal form of capitalism (Hall and Soskice, Varieties of Capitalism: the institutional foundations
of comparative advantage, 2001) and welfare regime (Esping-Andersen, The three worlds of welfare capitalism, 1990). It is
argued here that by combining aspects of the Varieties of Capitalism (VoC) and welfare regimes literatures with Gender Regime
theory (Walby, Social Politics, 11(1):4–29, 2004), a gender centred analysis of both the causes and consequences of divergent
working-time patterns can be more adequately achieved.
相似文献
Jennifer TomlinsonEmail: |
994.
Content analysis is widely used to analyze sexual themes and messages on television. Although researchers generally use a sampling procedure to identify programs for analysis, there is currently no gold standard for the number of episodes needed to establish a valid, representative sample. This study sought to explore how many episodes of weekly television programs should be examined for an accurate assessment of sexual content present throughout the season. Various sampling strategies were used to select episodes from programs that ran in the 1998-1999 season, and results were compared with data collected from all episodes of these programs to test representativeness. Findings suggest that to provide a representative assessment of sexual content on television programs for behavior-level variables, a random sample of five episodes of weekly television programs is sufficient, while three episodes may be acceptable if variation is minimal. A random sample of seven episodes is needed for character-based analyses. 相似文献
995.
This article provides a review of research literature on women who use violence with intimate partners. The central purpose is to inform service providers in the military and civilian communities who work with domestically violent women. The major points of this review are as follows: (a) women's violence usually occurs in the context of violence against them by their male partners; (b) in general, women and men perpetrate equivalent levels of physical and psychological aggression, but evidence suggests that men perpetrate sexual abuse, coercive control, and stalking more frequently than women and that women also are much more frequently injured during domestic violence incidents; (c) women and men are equally likely to initiate physical violence in relationships involving less serious "situational couple violence," and in relationships in which serious and very violent "intimate terrorism" occurs, men are much more likely to be perpetrators and women victims; (d) women's physical violence is more likely than men's violence to be motivated by self-defense and fear, whereas men's physical violence is more likely than women's to be driven by control motives; (e) studies of couples in mutually violent relationships find more negative effects for women than for men; and (f) because of the many differences in behaviors and motivations between women's and men's violence, interventions based on male models of partner violence are likely not effective for many women. 相似文献
996.
OBJECTIVE: The authors examined the effect of certified personal trainer services on exercise behavior by using the transtheoretical model of behavioral change. PARTICIPANTS: Female college students (n = 449) completed surveys during the first week (T1) and last week (T2) of the fall semester. METHODS: Students receiving personal trainer services during the fall semester (experimental group, n = 31) were cross-matched with students who had not received services (control group, n = 31). RESULTS: The control group demonstrated a statistically significant regression in stage of exercise change scores; the experimental group did not. The authors found the 2 groups to have a statistically significant difference in the pattern of exercise behavior change over the course of the semester, with more active maintainers and progressors in the experimental group. CONCLUSIONS: Cognitive and behavioral processes of change, decisional balance, and scheduling self-efficacy significantly decreased in the control group, whereas cognitive processes of change, decisional balance, and scheduling self-efficacy remained statistically unchanged in the experimental group. 相似文献
997.
Writing Group for the British Menopause Society Council Pitkin J Rees MC Gray S Lumsden MA Marsden J Stevenson JC Williamson J 《Menopause international》2008,14(2):88-90
The British Menopause Society Council is committed to provide up-to-date authoritative reviews to aid health professionals to inform and advise women about key issues in postreproductive health. This guidance refers to non-estrogen-based treatments for menopausal symptoms, such as hot flushes, symptoms of urogenital atrophy and lack of sexual desire. Treatment of choice should be based on up to-date information and targeted to individual women's needs. Non-hormonal strategies may be useful for women with estrogen-dependent disease such as breast cancer. 相似文献
998.
Several studies have demonstrated that stepfamily couples have a higher risk of childbearing than couples in a stable union with the same total number of children. Analysing retrospective data from a nationally representative sample of Swedish adults, we find that the risk of a second or third birth is higher when it is the first or second child in a new union. We also find a faster pace of childbearing after stepfamily formation than after a shared birth. The risk of a second birth (in total) is only a little higher in the first two years after stepfamily formation than in the first two years after a shared birth, and thereafter the risk is lower for stepfamilies. The risk of a third birth (in total) is particularly high early in the stepfamily union and remains higher than that of couples with two shared children for at least five years. The stepfamily difference was lower after than before 1980, when the Swedish government introduced parental leave incentives for short birth intervals. 相似文献
999.
1000.
Cathy?W.?S.?ChenEmail author Jennifer?S.?K.?Chan Richard?Gerlach William?Y.?L.?Hsieh 《Statistics and Computing》2011,21(3):395-414
We consider two problems concerning locating change points in a linear regression model. One involves jump discontinuities
(change-point) in a regression model and the other involves regression lines connected at unknown points. We compare four
methods for estimating single or multiple change points in a regression model, when both the error variance and regression
coefficients change simultaneously at the unknown point(s): Bayesian, Julious, grid search, and the segmented methods. The
proposed methods are evaluated via a simulation study and compared via some standard measures of estimation bias and precision.
Finally, the methods are illustrated and compared using three real data sets. The simulation and empirical results overall
favor both the segmented and Bayesian methods of estimation, which simultaneously estimate the change point and the other
model parameters, though only the Bayesian method is able to handle both continuous and dis-continuous change point problems
successfully. If it is known that regression lines are continuous then the segmented method ranked first among methods. 相似文献